city based fetch state

src/controllers/departmentController.js

@@ -1743,6 +1743,26 @@ exports.getOffices = async (req, reply) => {
     }
   };
 
+  exports.getAllCities = async (req, reply) => {
+  try {
+    // Fetch only the majorCities field from all documents
+    const docs = await IndianLocations.find({}, "majorCities").lean();
+
+    // Flatten the array of arrays and remove duplicates
+    const cities = [...new Set(docs.flatMap(doc => doc.majorCities))];
+
+    // Sort alphabetically (case-insensitive)
+    cities.sort((a, b) => a.localeCompare(b, undefined, { sensitivity: "base" }));
+
+    reply.send(cities);
+
+  } catch (err) {
+    console.error("Error fetching cities:", err);
+    reply.status(500).send({ error: "Failed to fetch cities" });
+  }
+};
+
+  
   exports.getStaeBasedCites = async (request, reply) => {
     try {
       const { stateName } = request.params;
@@ -1759,4 +1779,32 @@ exports.getOffices = async (req, reply) => {
   };
   
 
+exports.getCitiesBasedState = async (request, reply) => {
+  try {
+    // Match the param name from the route exactly
+    const { majorcities } = request.params;
+
+    if (!majorcities) {
+      return reply.status(400).send({ error: "majorcities param is required" });
+    }
+
+    // Case-insensitive regex match against elements in the array
+    const stateDoc = await IndianLocations.findOne(
+      { majorCities: { $regex: new RegExp(`^${majorcities.trim()}$`, "i") } },
+      "state"
+    ).lean();
+
+    if (!stateDoc) {
+      return reply.status(404).send({ error: "City not found" });
+    }
+
+    reply.send({ state: stateDoc.state });
+
+  } catch (err) {
+    console.error("Error fetching state:", err);
+    reply.status(500).send({ error: "Failed to fetch state" });
+  }
+};
+
+
   

src/routes/departmentRoute.js

@@ -728,11 +728,22 @@ module.exports = function (fastify, opts, next) {
               handler:departmentController.getAllStates
             });
 
+             fastify.route({
+              method: "GET",
+              url: "/api/Cities",
+              schema: {
+                tags: ["Admin"],
+                description: "Get the Cities",
+                summary: "Get the Cities",
+              },
+              handler:departmentController.getAllCities
+            });
+            
             fastify.route({
               method: "GET",
               url: "/api/states/cities/:stateName",
               schema: {
-                tags: ["Department"],
+                tags: ["Admin"],
                 description: "Get the States by cities",
                 summary: "Get the states by cites",
                 params: {
@@ -745,5 +756,23 @@ module.exports = function (fastify, opts, next) {
               },
               handler:departmentController.getStaeBasedCites
             });
+
+             fastify.route({
+              method: "GET",
+              url: "/api/cities/states/:majorcities",
+              schema: {
+                tags: ["Admin"],
+                description: "Get the Cities by state",
+                summary: "Get the cities by state",
+                params: {
+                  type: "object",
+                  properties: {
+                    majorcities: { type: "string" },  
+                    
+                  },
+                },
+              },
+              handler:departmentController.getCitiesBasedState
+            });
     next();
     };